CN103475078B - A kind of charging device of high-power power battery group - Google Patents
A kind of charging device of high-power power battery group Download PDFInfo
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- CN103475078B CN103475078B CN201310465867.XA CN201310465867A CN103475078B CN 103475078 B CN103475078 B CN 103475078B CN 201310465867 A CN201310465867 A CN 201310465867A CN 103475078 B CN103475078 B CN 103475078B
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Abstract
The present invention discloses the charging device of a kind of high-power power battery group, including three-phase transformer, three-phase controllable silicon phase-shift voltage regulating rectification circuit, IGBT negative pulse discharge circuit, three-phase charge controller, batteries management system；The primary of three-phase transformer is connected with three phase mains by catalyst, secondary is connected described rectification circuit, arranges secondary current and voltage sampling circuit between described rectification circuit and set of cells；IGBT negative pulse discharge circuit in parallel is between the both positive and negative polarity of set of cells；Batteries management system is for gathering voltage and the temperature signal of each battery in set of cells；Three-phase charge controller carries out trickle charge or intermittently impulse charging and negative pulse discharge combined charging according to secondary current and the electric current of voltage sampling circuit collection and voltage signal and the voltage of each battery and temperature signal control contactor, described rectification circuit and IGBT negative pulse discharge circuit to set of cells；Output of the present invention is big, and charging is fast, and can extend the life-span of battery.
Description
Technical field
The present invention relates to the charging device of power battery pack, the charging device of a kind of high-power power battery group.
Background technology
Research and analyse according to the Chinese Academy of Sciences, last year haze weather event, from the hydro carbons organic granular of fuel-engined vehicle exhaust emissions
Thing accounting reaches 18%, and administering haze has become national strategy and whole society's hot issue, and it is dirty that motor vehicle exhaust emission has become city
One of dye thing main reason.And the electric automobile with electrokinetic cell as new forms of energy opens the uncharted field of zero-emission, power current
Pond, as the core energy of electric automobile, the flying power of electrokinetic cell, charging rate and battery, is i.e. filled much,
Filling soon, the life-span is long, it has also become the important technology index that can electric automobile fast-developing, charging device plays key among these
The effect of property.Existing charging device is primarily present two large problems:
1) output is less, and charging rate is slow, it is impossible to meet the quick charge requirement of electric automobile 2C or 4C, especially
Being long-distance big bus, battery pack power is more than 1000Ah, it is difficult to realize fast power in way.Charging device the most on the market is main
Use single-phase transformer rectification output electrokinetic cell is charged.One is single phase industrial frequence, and its ultimate principle is: single-phase
Transformator exports → is rectified into pulsating direct current → be added to set of cells.Serious injustice is there is in this charging device in charging process
Weighing apparatus electricity consumption, power factor fluctuation is big, can have a strong impact on the stability of partial electric grid electricity consumption, and the output of unit charging device
Generally less than 60kW；Another kind is single-phase high frequency, and its ultimate principle is: three-phase input rectifying becomes direct current → be reverse into by IGBT
Exchange → single-phase high frequency transformator → be rectified into pulsating direct current → be added to set of cells.Though this charging device solves electrical network three-phase
Balanced input, but owing to still using single-phase high frequency transformator, under high-frequency work state, output is the most restricted, general
All over less than 30kW, and there is high frequency radiation in various degree and electromagnetic compatibility problem.
2) charging current not science, have impact on the service life of electrokinetic cell.Theory and practice proves battery set charge/discharge
It is a complicated electrochemical process, in general charging current the most exponentially rule decline in charging process, can not
Can automatically press constant current or constant-voltage charge, and the factor affecting charging in charging process is a lot, the gassing voltage of battery, temperature
Degree, pole plate active matter etc. all can make charging produce the biggest difference.Power battery pack long-term work is under recurrent state, of low quality
Charging device will necessarily be greatly shortened life-span of battery, numerous battery experts say: " battery is not damaged, but fills bad
".
Summary of the invention
The technical problem to be solved in the present invention is to provide the charging device of a kind of high-power power battery group, it is possible to three intersect
Mobile equilibrium inputs, and DC output power is big, and charging rate is fast, and can extend the service life of electrokinetic cell.
For reaching above-mentioned purpose, the technical scheme is that the charging device of a kind of high-power power battery group, including
Three-phase transformer, three-phase controllable silicon phase-shift voltage regulating rectification circuit, IGBT negative pulse discharge circuit, also include that three-phase charging controls
Device, batteries management system；
The primary coil of three-phase transformer is connected with three phase mains by catalyst, and the secondary coil of three-phase transformer is even
Connecing three-phase controllable silicon phase-shift voltage regulating rectification circuit input end, the positive pole of described rectification circuit output end connects a single-phase conducting two
The positive pole of pole pipe, the negative pole of described diode connects a current sampling resistor front end, current sampling resistor rear end and set of cells
Positive pole connects, and the negative pole of described rectification circuit output end connects the negative pole of set of cells；
IGBT negative pulse discharge circuit in parallel is between the both positive and negative polarity of set of cells；
The positive pole of set of cells is also connected with first resistance one end, and the negative pole of set of cells is also connected with voltage sample resistance one end, the
One resistance is in series with voltage sample resistance；
The current signal of current sampling resistor and the voltage signal of voltage sample resistance flow to three-phase charge controller；
Described batteries management system gathers each battery in set of cells by temperature sensor and voltage collection circuit
Voltage and temperature are also transferred to three-phase charging control voltage and the temperature signal of each battery by RS485 or CAN communication interface
Device processed；
Described three-phase charge controller connects three phase mains and according to the current signal of current sampling resistor and voltage sample
The voltage signal of resistance and the voltage of each battery and temperature signal control contactor, three-phase controllable silicon phase-shift voltage regulating rectified current
Road and IGBT negative pulse discharge circuit carry out trickle charge or intermittently impulse charging and negative pulse discharge combined charging to set of cells.
The most described three-phase controllable silicon phase-shift voltage regulating rectification circuit includes six controllable silicons, the first silicon controlled positive pole and
Four silicon controlled negative poles connect and first end secondary with three-phase transformer is connected, and the first silicon controlled negative pole connects described two poles
The positive pole of pipe, the 4th silicon controlled positive pole connects battery electrode；3rd silicon controlled positive pole and the 6th silicon controlled negative pole are even
Connecing and second end secondary with three-phase transformer is connected, the 3rd silicon controlled negative pole connects the positive pole of described diode, and the 6th can
The positive pole of control silicon connects battery electrode；5th silicon controlled positive pole and the second silicon controlled negative pole connect and and three-phase transformer
Secondary three-terminal link, the 5th silicon controlled negative pole connects the positive pole of described diode, and the second silicon controlled positive pole connects electricity
Pond group negative pole；First controllable silicon, the second controllable silicon, the 3rd controllable silicon, the 4th controllable silicon, the 5th controllable silicon, the 6th silicon controlled
Control the end outfan respectively with three-phase charge controller to be connected.
The most described IGBT negative pulse discharge circuit includes IGBT switching tube, the second resistance and the 3rd resistance, and IGBT switchs
The emitter stage of pipe connects the second resistance, and the second resistance reconnects the negative pole of set of cells, and the colelctor electrode of IGBT switching tube connects the 3rd
Resistance, the 3rd resistance reconnects the positive pole of set of cells, and the control pole of IGBT switching tube connects described three-phase charge controller one
Outfan.
Improving further, described 3rd resistance is variable resistance.To facilitate the adjustment velocity of discharge.
Improving further, described first resistance is made up of three resistance concatenations.Expand the first resistance selection scope, to reduce
Production cost.
Improving further, the leading-in end of described three phase mains is provided with chopper.The convenient control to input power.
Improving further, also include touch screen, described touch screen connects three-phase charging by RS485 communication interface and controls
Device.Three-phase charge controller passes through touch screen human-computer interaction interface, according to the rated capacity of set of cells, can independently set battery
Group rated voltage；Can independently set charging interval, charge capacity；Autonomous set fast punching, in fill, trickle charge mode.Human nature is provided
The interactive interface changed and modes selecting, solve a charging device and meet the charge requirement of multiple power battery pack, gram
Charging device and the man-to-man technical bottleneck of power battery pack are taken.
The present invention has the advantage that compared to conventional charging arrangements
1, three-phase transformer and three-phase controllable silicon phase-shift voltage regulating rectification circuit is used to match and be charged, it is ensured that local electric
The balance of net electricity consumption and stability, can obtain bigger output, and maximum charging current of the present invention can reach 600A, maximum defeated
Go out power up to 400kW；
2, between three-phase controllable silicon phase-shift voltage regulating rectification circuit and set of cells, it is provided with secondary current sample circuit and two
Secondary voltage sample circuit, three-phase charge controller is provided with CAN/RS485 serial communication interface simultaneously, can pass through battery set management
System obtains the voltage of each piece of cell, temperature information；Then according to secondary current and voltage sampling signal, three-phase charges
Controller automatic dynamic follows the tracks of the receptible maximum charging current of set of cells, improves charging rate；
3, the temperature information obtained according to batteries management system communication, three-phase charge controller converses set of cells automatically
Two ends currently can receptible maximum gassing voltage, and by controllable silicon phase-shift voltage regulating, set maximum output voltage, it is ensured that do not produce
Raw overvoltage charging；
4, obtain the both end voltage of cell according to batteries management system, can accurately judge cell impedance
Variable condition, when a certain piece of battery impedance rising or both end voltage exceed setting value in advance or temperature exceedes setting value, controls
Device is automatically converted into intermittently impulse charging and negative pulse discharge combined charging pattern, and battery in time carries out the biggest electric current wink
Between discharge, it is possible to remove the gas on battery positive plate, and make oxygen be absorbed on negative plate, thus solve battery soon
Polarization problem in speed charging process, this process can also reduce the pressure of inside battery, temperature, impedance, reduces energy
Loss, makes electric energy more effectively be converted into chemical energy and store, improves the charge acceptance of charge efficiency and battery,
Thus it is greatly improved charging rate, shorten the charging interval；
5, when quick charge amount reaches 98%, controller can also be automatically converted into trickle floating charge, until charging current subtracts
Little to being completely filled with close to zero-sum.
Therefore, output of the present invention is big, and charging rate is fast, and can extend the service life of electrokinetic cell.
Accompanying drawing explanation
Fig. 1 is principle of the invention figure.
Detailed description of the invention
With specific embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings.
Shown in Fig. 1, the charging device of a kind of high-power power battery group, including three-phase transformer 1, three-phase controllable silicon phase shift
Voltage regulating rectification circuit 2, IGBT negative pulse discharge circuit 3, three-phase charge controller 4, touch screen 5, batteries management system 6, institute
State touch screen 5 and connect three-phase charge controller 4 by RS485 communication interface；
The primary coil of three-phase transformer 1 is connected with three phase mains by catalyst 7, and described three-phase controllable silicon phase shift is adjusted
Voltage rectifier 2 includes six controllable silicons, and the positive pole of the first controllable silicon V1 and the negative pole of the 4th controllable silicon V4 connect and and three-phase
First end of 1 level of transformator connects, the positive pole of negative pole one single-phase conducting diode D1 of connection of the first controllable silicon V1, and the 4th
The positive pole of controllable silicon V4 connects set of cells 8 negative pole；The negative pole of the positive pole of the 3rd controllable silicon V3 and the 6th controllable silicon V6 connect and with
Second end of 1 level of three-phase transformer connects, and the negative pole of the 3rd controllable silicon V3 connects the positive pole of described diode D1, and the 6th is controlled
The positive pole of silicon V6 connects set of cells 8 negative pole；The positive pole of the 5th controllable silicon V5 and the negative pole of the second controllable silicon V2 connect and and three-phase
The three-terminal link of 1 level of transformator, the negative pole of the 5th controllable silicon V5 connects the positive pole of described diode D1, the second controllable silicon V2
Positive pole connect set of cells 8 negative pole；First controllable silicon V1, the second controllable silicon V2, the 3rd controllable silicon V3, the 4th controllable silicon V4,
Five controllable silicon V5, the end outfan respectively with three-phase charge controller 4 that controls of the 6th controllable silicon V6 are connected；
The negative pole of described diode D1 connects a current sampling resistor Rs1 front end, current sampling resistor Rs1 rear end and battery
The positive pole of group 8 connects；
The positive pole of set of cells 8 is also connected with first resistance 9 one end, and the negative pole of set of cells 8 is also connected with voltage sample resistance R4 mono-
End, the first resistance 9 is in series with voltage sample resistance R4, and described first resistance 9 is made up of three resistance R1, R2, R3 concatenations；
IGBT negative pulse discharge circuit 3 is connected in parallel between the both positive and negative polarity of set of cells 8；Described IGBT negative pulse discharge circuit 3
Including IGBT switching tube the 31, second resistance R5 and the 3rd resistance Rs2, the emitter stage of IGBT switching tube 31 connects the second resistance R5,
Second resistance R5 reconnects the negative pole of set of cells 8, and the colelctor electrode of IGBT switching tube 31 connects the 3rd resistance Rs2, the 3rd resistance Rs2
Reconnecting the positive pole of set of cells 8, the control pole of IGBT switching tube 31 connects 4 one outfans of three-phase charge controller；
Described 3rd resistance Rs2 can be selected for variable resistance；
The current signal of current sampling resistor Rs1 and the voltage signal of voltage sample resistance R4 flow to three-phase charging and control
Device 4；
Described batteries management system 6 gathers each battery in set of cells 8 by temperature sensor and voltage collection circuit
Voltage and temperature the voltage of each battery and temperature signal are transferred to three-phase by RS485 or CAN communication interface charge
Controller 4；
Described three-phase charge controller 4 connects three phase mains and according to the current signal of current sampling resistor Rs1 and voltage
The voltage signal of sampling resistor R4 and the voltage of each battery and temperature signal control contactor 7, three-phase controllable silicon phase shift are adjusted
Set of cells 8 is carried out voltage rectifier 2 and IGBT negative pulse discharge circuit 3 trickle charge or intermittently impulse charging is put with negative pulse
Electricity combined charging；
Leading-in end at three phase mains is additionally provided with chopper 10.
Described three-phase charge controller 4 can select industrial computer or Industrial PC Computer etc. to be able to carry out calculating and controlling journey
The microsystem of sequence.
The present embodiment can realize following design parameter:
1) exchange input: input ac voltage: three-phase 380VAC/50HZ, input line electric current: 175A, input apparent energy:
115kVA；
2) direct current output: output rated voltage: 468VDC, exports rated current: 206ADC, output rated power:
100kW, fluctuation waveform output frequency 300HZ；
3) negative pulse discharge: discharge pulse current: 500ADC, pulsewidth: 2mS(is adjustable)；Load set of cells is (single by 120
Body 3.3V/570A) composition or by set of cells in parallel for 2*120, charging device once charges, long-distance big bus can continue a journey 350kM or
700kM。
Below being only one preferred embodiment of the present invention, those skilled in the art is made the change being equal to by claim
Both fall within the protection domain of this case.
Claims (6)
1. a charging device for high-power power battery group, including three-phase transformer, three-phase controllable silicon phase-shift voltage regulating rectified current
Road, IGBT negative pulse discharge circuit, it is characterised in that: also include three-phase charge controller, batteries management system；
The primary coil of three-phase transformer is connected with three phase mains by catalyst, and the secondary coil of three-phase transformer connects three
Phase controllable silicon phase-shift voltage regulating rectification circuit input end, the positive pole of described rectification circuit output end connects a single-phase conducting diode
Positive pole, the negative pole of described diode connects a current sampling resistor front end, the positive pole of current sampling resistor rear end and set of cells
Connecting, the negative pole of described rectification circuit output end connects the negative pole of set of cells；
IGBT negative pulse discharge circuit in parallel is between the both positive and negative polarity of set of cells；
The positive pole of set of cells is also connected with first resistance one end, and the negative pole of set of cells is also connected with voltage sample resistance one end, the first electricity
Resistance is in series with voltage sample resistance；
The current signal of current sampling resistor and the voltage signal of voltage sample resistance flow to three-phase charge controller；
Described batteries management system gathers the voltage of each battery in set of cells by temperature sensor and voltage collection circuit
It is transferred to three-phase charge controller by RS485 or CAN communication interface with temperature and voltage and the temperature signal of each battery；
Described three-phase charge controller connects three phase mains and according to the current signal of current sampling resistor and voltage sample resistance
Voltage signal and the voltage of each battery and temperature signal control contactor, three-phase controllable silicon phase-shift voltage regulating rectification circuit and
IGBT negative pulse discharge circuit carries out trickle charge or intermittently impulse charging and negative pulse discharge combined charging to set of cells；
Described IGBT negative pulse discharge circuit includes IGBT switching tube, the second resistance and the 3rd resistance, the transmitting of IGBT switching tube
Pole connects the second resistance, and the second resistance reconnects the negative pole of set of cells, colelctor electrode connection the 3rd resistance of IGBT switching tube, and the 3rd
Resistance reconnects the positive pole of set of cells, and the control pole of IGBT switching tube connects one outfan of described three-phase charge controller.
The charging device of a kind of high-power power battery group the most according to claim 1, it is characterised in that: described three-phase can
Control silicon phase-shift voltage regulating rectification circuit includes six controllable silicons, the first silicon controlled positive pole and the connection of the 4th silicon controlled negative pole and with
The first end connection that three-phase transformer is secondary, the first silicon controlled negative pole connects the positive pole of described diode, the 4th silicon controlled
Positive pole connects battery electrode；3rd silicon controlled positive pole and the 6th silicon controlled negative pole connect and secondary with three-phase transformer
Second end connects, and the 3rd silicon controlled negative pole connects the positive pole of described diode, and the 6th silicon controlled positive pole connects set of cells and bears
Pole；5th silicon controlled positive pole and the second silicon controlled negative pole connect and the three-terminal link secondary with three-phase transformer, and the 5th
Silicon controlled negative pole connects the positive pole of described diode, and the second silicon controlled positive pole connects battery electrode；First controllable silicon,
Two controllable silicons, the 3rd controllable silicon, the 4th controllable silicon, the 5th controllable silicon, the 6th silicon controlled control end and control with three-phase charging respectively
The outfan of device processed is connected.
The charging device of a kind of high-power power battery group the most according to claim 1, it is characterised in that: described 3rd electricity
Resistance is variable resistance.
The charging device of a kind of high-power power battery group the most according to claim 1, it is characterised in that: described first electricity
Hinder and be made up of three resistance concatenations.
The charging device of a kind of high-power power battery group the most according to claim 1, it is characterised in that: described three-phase electricity
The leading-in end in source is provided with chopper.
6. according to the charging device of a kind of high-power power battery group described in any one of claim 1 to 5, it is characterised in that:
Also including touch screen, described touch screen connects three-phase charge controller by RS485 communication interface.
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| CN103779625A (en) * | 2014-01-20 | 2014-05-07 | 北京智行鸿远汽车技术有限公司 | Method for performing pulse charge and pulse discharge on battery |
| CN104259672B (en) * | 2014-09-18 | 2016-04-13 | 苏州迅镭激光科技有限公司 | YAG laser cutting power circuit system |
| CN105553018B (en) * | 2015-12-31 | 2018-02-23 | 浙江金源电气科技有限公司 | Wall-mount transformer and its method to electric car charging |
| CN113852175B (en) * | 2021-11-24 | 2023-01-13 | 深圳易能时代科技有限公司 | Charging pile and charging method thereof |
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| CN201918909U (en) * | 2011-01-04 | 2011-08-03 | 厦门绿洋电气有限公司 | Three-phase high-voltage power supply for electric precipitation |
| CN102751776A (en) * | 2012-07-17 | 2012-10-24 | 浙江永宏电器有限公司 | High-capacity reversible charging and discharging device |
| CN203481903U (en) * | 2013-10-09 | 2014-03-12 | 厦门绿洋电气有限公司 | Charging device of large-power power battery pack |
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| CN202004479U (en) * | 2010-12-29 | 2011-10-05 | 河北创科电子科技有限公司 | Discharging device of single-group storage battery of DC system |
| JP5794104B2 (en) * | 2011-10-27 | 2015-10-14 | ソニー株式会社 | Battery pack, power storage system, electronic device, electric vehicle and power system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201918909U (en) * | 2011-01-04 | 2011-08-03 | 厦门绿洋电气有限公司 | Three-phase high-voltage power supply for electric precipitation |
| CN102751776A (en) * | 2012-07-17 | 2012-10-24 | 浙江永宏电器有限公司 | High-capacity reversible charging and discharging device |
| CN203481903U (en) * | 2013-10-09 | 2014-03-12 | 厦门绿洋电气有限公司 | Charging device of large-power power battery pack |
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Address after: 361000 No. 63 Xiang Yue Road, Xiangan torch garden, Xiamen, Fujian Patentee after: Xiamen Lvyang environmental technology Limited by Share Ltd Address before: 361000 No. 63 Xiang Yue Road, Xiangan torch garden, Xiamen, Fujian Patentee before: Xiamen Leadyoung Electric Co., Ltd. |